Many modern electronic doorbells are powered by batteries. It's because of this that they do not require any physical connection to a house's power grid. However, the batteries for a doorbell will eventually run out. It's important to take care of the problem by replacing the batteries before someone who you're expecting is at your door.
Step 1
Unscrew the doorbell using the screwdriver or drill if the doorbell is mounted.
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Step 2
Open the battery compartment of your doorbell.
Step 3
Remove the old batteries from the doorbell and replace them with the new batteries.
Step 4
Close the battery mount. Test the doorbell to make sure it works.
Step 5
Reattach the doorbell to where you removed it using the drill or screwdriver.
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